Resistor-supporting unit



Dec. 13 i' E E. RESISTOR SUPPORTING UNIT Filed A112. 9, 1924 WiTNESES:INVENTOR E/WaSf/Z Sufherkmd Patented Dec. 13, 1927.

on stares PATENT OFFICE.

ERNEST IE. SUTHERLANID, OF MANSFIELD, OHIO, ASSIG-NOR TO WESTINGHOUSEELEC- TRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA;

RESISTDR-SUPPOBTING UNIT.

Application filed August 9, 1924. Serial No. 731,066.

My invention relates to electrically heated devices and particularly toresistor-supporting units therefor.

The object of my invention is to provlde an electric resistor-supportingmeans that is so constructed that a maximum amount of the heat radiatedtherefrom shall be transmitted to the objects to be heated and a minimumamount will be absorbed by the resistor-supporting member.

In practicing my invention, I pro-vlde a refractory resistor supportingmember having grooves therein for receiving a hehcally wound resistormember. A plurality of lug members are disposed in said grooves andproject inwardly from the sides and upwardly from the bottom thereof.The lug members are relatively small and are located in sets in opposedrelation and serve to support the resistor member in an elevatedposition relatively to the bottom of said groove. Terminals of usualconstruction are connected to the resistor member.

In the single sheet of drawings,

Fi ure 1 is a top plan view of an electrically heated device employed inmy invention;

Fig. 2 is a view in section thereof, taken along the long II II ofFigure 1; and.

Fig. 3 is a fragmentary top plan view of another embodiment of myinvention.

A refractory member 11 comprises a plurality of grooves 12 and .13 thatare arranged concentrically for convenience and compact ness ofdesign.Resistor members 14: and 15 are disposed in grooves 12 and 13 and aresupported by a plurality of opposed sets of lugs 16 that projectinwardly from the walls 17 and upwardly from the bottom 18 of grooves 12and 13. The lugs 16 are integral with the refractory member 13 andsupport the resistor members 14: and 15 in a substantially elevatedposition relatively to the bottom 18 of said grooves 12 and Any suitable means (not shown) may be employed to secure the resistor members inoperative position in said grooves.

Resistor members i l and 15 are secured at their ends by bolts 19, 21and 22 to refractory member 11 and are connected to terminal members23,2d and 25 by conductors 26, 27 and 28. The terminal members 23, 2 1and 25 are secured to refractory member 11 in any well known manner andI have shown a suitable construction that comprises a clamping member 29that clamps the terminal members 23, 24 and 25 to the refractory member11 and that is secured thereto by bolts 31 and 32.

Referring to Fig. 8, I have shown another embodiment of my invention inwhich the lug members 33 are disposed in opposed re lation but staggeredrelatively to each other. Other methods of arranging the lug members maybe employed and I do not wish to be limited to the construction shownherein.

By using a construction as hereinbefore described the resistor membermay be supported in such manner that the maximum amount of heattherefrom shall be transmit ted to the objects that are to be heated anda minimum amount of heat absorbed by the refractory supporting member.The resistor.

member is located in an elevated position thereby providing a spacebetween itself and the refractory member to prevent absorption of heatby the refractory member due to direct contact therewith.

Various modifications and changes may be made Without departing from thespirit and scope of my invention, and I desire therefore that only suchlimitations shall be placed thereon, as are imposed by the prior art orare set forth in the appended claims.

I claim as my invention:

1. In an electric resistor-supporting device, the combination with arefractory memher having a groove therein for securing an electricresistor, of a plurality of spaced lug members integral with saidrefractory meniber disposed in said groove for supporting said resistorin an elevated position relatively to the bottom of said groove.

2. In an electric resistor-supporting de vice, the combination with arefractory member having a groove therein for receiving an electricresistor, of a plurality of lugmembers extending inwardly from the sidesand upwardly from the bottom of said groove for supporting said resistorin an elevated position relatively to the bottom of said groove.

3. In an electric resistor-supporting device, the combination with arefractory menr her having a groove therein for receiving an electricresistor, of a plurality of sets of opposed lug members extendinginwardly from the sides and upwardly from the bottom of said groove forsupporting said resistor in an elevated position relatively to thebottom of said groove.

4. In an eleotrie-resistor-supporting device, the combination with arefractory member having a groove therein for receiving a helicalresistor member, of spaced-apart lugs disposed in the bottom of saidgroove for maintaining the resistor member out of engage ment with thebottom thereof.

5. In an eieetrie-resistor-supporting device, the combination with arefractory member having a groove therein for receiving a, helicalresistor member, of spacednpart lugs disposed in the bottom of saidgroove, said lug members being integral with the refractory member fornmintaining the resistor member out of engagement with the bottomthereof.

In testimony whereof, I have hereunto subscribed my name thisthirty-first day of July, 1924:.

ERNEST E. SUTHERLAN D.

